Hello Keith,

Nickel is prohibited, by one of our customers,  in some applications.
So nickel containing components and ENIG are not allowed there.
Perhaps the nickel content in this alloy is very low, but adding nickel to
those products should be avoided as much as possible.
The function of the application will be affected by any magnetic sensitiv
material (and that is not the only prohibited material).
I can't tell you the  details about the application.
Tests and production that we have done showed us that SAC gave even better
results than we expected.


Since our wave is filled with SAC  it is hard to swap to SN100C.
I think we will study SN100C as soon as our complete process is converted to
lead-free and stable!


Best regards


Jowan Iven


-----Original Message-----
From:   Leadfree [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent:   woensdag 4 augustus 2004 16:49
To:     [log in to unmask]
Subject:        Re: [LF] What about SN100C?

Jowan,

The key point here is that the amount of Ni in SN100C (<0.1%) is
insignificant compared with other nickel that is typically present in an
electronic
assembly and in and around soldered joints.

There are nickel plating underlays to solderable coatings such as the
popular
nickel/gold finish.  And the high nickel iron alloy "Alloy 42" is widely
used
for component leadframes.

The nickel in the Nihon Superior SN100C is virtually all incorporated into
the crystal structure of the Cu6Sn5 intermetallic so that it would probably
behave differently than it would if it were present in a simple metallic
form
although at the moment there is no data on that point.


Keith Sweatman
Nihon Superior Co., Ltd.


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